摘要
以满足安全防护要求和尽可能降低成本为原则,研究开发出一种适用于山区公路的箱式填石护栏。该护栏以便于山区就地取材的片石(毛石)为护栏原材料,采用预制拼装混凝土箱体方式施工,降低了护栏施工的成本和周期。根据实车碰撞试验结果,箱式填石护栏防撞等级能够达到A级(160kJ),各项安全性能评价指标均满足相关标准要求,小客车和大货车碰撞护栏后,护栏整体结构均未损坏,减小了碰撞后护栏的维修工作量,从而可降低运营期的养护成本。通过在贵州省部分山区公路路段的实际工程应用,研究总结了箱式填石护栏的施工工艺和施工注意事项。
In principle of reducing construction costs and meeting the safety protection requirements,a kind of box stone-filled guardrail is developed for mountain highway.The guardrail uses platy stone(or freestone) as raw materials,which is easy to obtain for mountain area.The prefabricated assembly construction craft for concrete box can lessen the construction period and cost.According to the full-scale impact test results,the crashworthiness of box stone-filled guardrail can reach A level(160kJ),and all the safety performance evaluation indexes meet the related standards,the whole guardrail structure did not damage crashed by car and truck,which helps to decrease the maintenance workload after crash,thus reduce the maintenance cost in operation period.Through the engineering application in part of the mountainous area highway in Guizhou Province,the construction technology and matters needing attention is researched and summarized.
出处
《公路》
北大核心
2013年第1期255-259,共5页
Highway
关键词
护栏
低成本
山区公路
箱式填石
实车碰撞试验
guardrail
low cost
mountain highway
box stone-filled
full-scale impact test
